Single hook



FIG. 1 is a perspective view of a single hook showing a new design;

FIG. 2 is a top view of the single hook of FIG. 1;

FIG. 3 is a front view of the single hook of FIG. 1;

FIG. 4 is a side view of the single hook of FIG. 1;

FIG. 5 is a bottom side view of the single hook of FIG. 1; and,

FIG. 6 is a rear view of the single hook of FIG. 1.

The broken lines in FIG. 5 illustrate portions of the single hook which form no part of the claimed design. 

CLAIM What is claimed is the ornamental design for a single hook, as shown and described. 